Ewine van Dishoeck, an esteemed astrochemist, has dedicated her career to exploring the universe's chemical mysteries. Her work focuses on the fascinating realm where interstellar dust meets molecular formation, offering a unique perspective on the origins of life. In an exclusive interview with EL PAÍS, van Dishoeck delves into her groundbreaking research, the role of interstellar dust, and the search for extraterrestrial life.
The Power of Interstellar Dust
Van Dishoeck's passion for interstellar dust is evident. She explains that these tiny particles, often overlooked, play a crucial role in the formation of complex molecules. "I love it because it helps us make molecules," she says. "These sand grains act as a place where atoms and molecules can meet and greet."
The process begins with the first generation of stars, which undergo nuclear combustion to produce essential elements like carbon, nitrogen, and oxygen. Over time, subsequent generations of stars contribute to the creation of heavier elements. Van Dishoeck highlights the James Webb Space Telescope's role in revealing that this process occurs faster than previously thought.
The Chemistry of Space
When it comes to forming complex molecules, space presents unique challenges. The extreme emptiness and cold of space allow certain reactions to occur that are impossible on Earth. Van Dishoeck explains, "In space, we don't have any control, but it's so empty there, and so cold, that certain types of reactions can take place."
Water, a fundamental building block of life, forms through a slow process in space. The density of Earth's atmosphere hinders the formation of water, requiring the emission of a photon to release excess energy. In contrast, space's low density facilitates the formation of water and other complex molecules.
The Quest for Extraterrestrial Life
The search for extraterrestrial life is a captivating aspect of van Dishoeck's work. She acknowledges the importance of water as a solvent, stating, "Water is still one of the best solvents that we know for bringing molecules together."
However, she expresses skepticism about the ease of finding the "signature of life." Van Dishoeck emphasizes the need for advanced telescopes like the Extremely Large Telescope and the next generation of space missions to make significant progress in this field.
Building Bridges with Astronomy
Van Dishoeck's perspective on science diplomacy is insightful. She believes that astronomy unites rather than divides, stating, "If you look from space, we don't see any borders. It's just one beautiful Earth."
Her experience as the president of the International Astronomical Union highlights the importance of gender equality in academia. She reflects on her own journey, noting that being the only woman in her classes drew attention, and she was treated with respect. Today, women make up 50% of her classes, indicating progress.
In conclusion, Ewine van Dishoeck's work continues to push the boundaries of our understanding of the universe, offering valuable insights into the origins of life and the potential for extraterrestrial existence.
